Answer: B
Three nitro groups, two ortho and one para to chlorine, activate nucleophilic aromatic substitution so strongly that hydrolysis occurs at room temperature. The initial product is sodium 2,4,6-trinitrophenoxide, and acidification gives 2,4,6-trinitrophenol (picric acid). The dinitrophenol would need loss of a nitro group, the amine needs ammonia, and trinitrobenzene needs a reducing agent.